Fire-extinguisher.



PATENTED AUG. 28, 1906.

J. D. PBNNOCK.

FIRE EXTINGUISHER.

APPLICATION FILED MAY26.1905.

UTED STATES PATENT FFTCE.

JOHN D. PENNOCK, or SYRACUSE, NEW YORK. l

' FIRE-=EIXTINGUI$HER.

Specification of Letters Patent.

Patented Aug. 28, 1906.

Application filed May 25, 1905. Serial No. 262,125.

To all whom it mwyconccrn:

Be it known that 1, JOHN D. PENNOCK, a citizen of the United States,residing at Syracuse, in the county of Onondaga and State of New York,have invented a new and useful Fire-Extinguisher, of which the followingis a specification.

My invention relates to improvements in fire-extinguishers, my objectbeing to provide improved means for extinguishing fires which shall notbe subject to the temperature limitations common to similar devices nowin use.

A common and well-known form of fireextinguisher now in use comprises ametallic cylinder in which a solution of bicarbonate of soda is placedand also sulfuric acid contained in a bottle secured to the upper end ofthe cylinder, the elements being so arranged that when the cylinder isupset the acid and bicarbonate of soda are brought into chemicalrelation, resulting in the formation of a gas, whereby the solution isexpelled with considerable pressure. Such extinguishers, however, cannotbe used in storehouses, warehouses, and like places in northern climate,where there is no means of heating the place, as the solution in theextinguisher freezes at about 32 Fah renheit.

My invention comprises means for the discharge of a chlorid solution ofsuch strength (30 Baum) that it will not freeze before a temperature ofapproximately 39 Fahrenheit is reached.

My invention comprises the use of an acidfor instance, muriatic ornitric acid-a carbonate or bicarbonatefor instance, bicarbonate of sodaor bicarbonate of potassiumand a chlorid solution-for instance, chloridof calcium, magnesium, strontium, or sodium. The said acid, bicarbonate,and chlorid solution are so arranged in a vessel that in one position ofthe vessel each shall be kept separate from the other, but uponinverting the receptacle the acid combines with the carbonate to formcarbonic-acid gas, which is discharged into the chlorid solution,causing the said solution to be forced from said receptacle underconsiderable pressure.

Referring to the drawings, Figure 1 is a vertical section of my device.Fig. 2 is a horizontal section on line 2 2 of Fig. 1.

Similar nume'rals refer to similar parts throughout both views.

The receptacle 1 is preferably a brass cylinder about two feet in len thand seven inches in diameter and adapted to be closed at the vice isready to be put into service.

top by a screw-cap 2. About one and a half inches below the top of thecylinder is provided the diaphragm 3, containingthe centrally-locatedcup 4, projecting downwardly therefrom. Through the diaphragm 3 on theleft-hand side of the cylinder extends the one-quarter-inch tube 5 fromabove said diaphragm to approximately the bottom of the cylinder. Thistube is opened at both ends. The cup 4 is adapted to hold the bottle 6,containing acid, such as muriatic or nitric acid. This bottle 6 isprovided with a lead cap 11, set into it with the crown downward, and arather wide flange, which will prevent the swash of acid into thebicarbonate-chamber. The curved spring 7 is adapted to maintain saidbottle in position. The chamber 8 above diaphragm 3 is filled withbicarbonate of soda, while chlorid solution is introduced through pipe 5into the cylinder beneath said diaphragm 3 until the same is filled towithin approximately three-quarters of an inch of the diaphragm. Theusual pipe, such as 10, is provided projecting beneath the diaphragm 3for securing the hose .12. When the chemicals are in the position abovedescribed, the screw-cap 2 is secured in position and the de- This isdone by turning the cylinder in the reverse position from that shown inFig. 1 whereupon the lead cap 11 will fall from the bottle and the acidwill mingle with the bicarbonate of soda, from which is evolvedcarbonic-acid gas, which will pass through the tube 5 and mingle withthe calcium chlorid, causing the same to be driven with pressure throughthe pipe 10 and hose secured thereto.

Such a device as above described may be exposed to the coldest weatherwithout freezing. By such a device a pressure will be developed e ual,if not superior, to that of any other simi ar extinguisher, and thestream of solution will consequently be thrown an e ual or greaterdistance. The solution itself-fhat is, the calcium chlorid-is consideredan especially efficient means for extinguishing fire.

What I claim is 1. A fire-extinguishing apparatus, comprising areceptacle divided into two compartments by an intermediate partition,and a conducting-tube leading through said partition from near the topof one compartment to approximately the bottom of the other compartment.

2. A lire-extinguishing apparatus comprising a receptacle provided withtwo compartments separated by'an intermediate partition, one compartmentbeing larger than the other, a conducting-pi e leading from the smallercompartment t ough the artition to approximately the bottom of t elarger compartment and a receptacle integral with the partitionrejecting mto the'lar or compartment an opening mto the sma ercompartment.

3, A fire-extinguisher comprising a receptacle provided with twocompartments, a discharge-conductor from one compartment to the outsideatmosphere, a conductor extending ment, an acid and a carbonatecontainedin one compartment normall separated from each other butcapable of eing brought tofrom one compartment approximately to thebottom of the other compartgether, and a chlorid solution in the othercompartment.

' 4. A fire-extinguishin apparatus com prising a receptacle pr'ovi edwith two compartments separated by an intermediate artition, onecompartment being larger t n the other; a conductingipe leadmg'from thesmaller compartment t n'ough the artition to approximately the bottom 0the lar er compartment; a receptacle integral wit the partitionprojecting. into the lar er compartment and opening mto the sma er.

compartment, and a retaining-spring proj ecting over the said openin JOHD. PENNOCKJ Witnesses: AUGUST SMINGLER, Jr., CARROLL W. Cnaem.

